form1.frm

新手学习vb语言的实用资料于其对计算机语言做出相应了解的教材

VERSION 5.00
Begin VB.Form Form1 
   Caption         =   "将桌面图标文字背景设置为透明色"
   ClientHeight    =   3075
   ClientLeft      =   60
   ClientTop       =   345
   ClientWidth     =   4680
   LinkTopic       =   "Form1"
   ScaleHeight     =   3075
   ScaleWidth      =   4680
   StartUpPosition =   3  '窗口缺省
   Begin VB.CommandButton Command1 
      Caption         =   "执  行"
      Height          =   495
      Left            =   1800
      TabIndex        =   0
      Top             =   1080
      Width           =   1335
   End
End
Attribute VB_Name = "Form1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Option Explicit
Private Declare Function FindWindow Lib "user32" Alias "FindWindowA" (ByVal lpClassName As String, ByVal lpWindowName As String) As Long
Private Declare Function FindWindowEx Lib "user32" Alias "FindWindowExA" (ByVal hWnd1 As Long, ByVal hWnd2 As Long, ByVal lpsz1 As String, ByVal lpsz2 As String) As Long
Private Declare Function InvalidateRect Lib "user32" (ByVal hwnd As Long, ByVal lpRect As Long, ByVal bErase As Long) As Long
Private Declare Function SendMessage Lib "user32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any) As Long
Private Const LVM_SETTEXTBKCOLOR = &H1000 + 38

Private Sub ShowError()
    MsgBox "未知的错误", vbOKOnly + vbInformation
    End
End Sub

Private Sub Command1_Click()
Dim Parent&, Child&, CChild&
Parent = FindWindow(vbNullString, "Program Manager")
If Parent = 0 Then ShowError
Child = FindWindowEx(Parent, 0, "SHELLDLL_DefView", vbNullString)
If Child = 0 Then ShowError
CChild = FindWindowEx(Child, 0, "SysListView32", vbNullString)
If CChild = 0 Then ShowError
SendMessage CChild, LVM_SETTEXTBKCOLOR, 0, ByVal &HFFFFFFFF
InvalidateRect CChild, 0, True
End Sub